private static Type CreateDelegateType (BasicSignature signature)
{
string delTypeName = signature.UniqueName;
TypeAttributes typeAttr = TypeAttributes.Class | TypeAttributes.Sealed | TypeAttributes.AnsiClass | TypeAttributes.AutoClass;
TypeBuilder del = CppLibrary.interopModule.DefineType (delTypeName, typeAttr, typeof(MulticastDelegate));
if (signature.CallingConvention.HasValue) {
ConstructorInfo ufpa = typeof (UnmanagedFunctionPointerAttribute).GetConstructor (new Type [] { typeof (CallingConvention) });
CustomAttributeBuilder unmanagedPointer = new CustomAttributeBuilder (ufpa, new object [] { signature.CallingConvention.Value });
del.SetCustomAttribute (unmanagedPointer);
}
MethodAttributes ctorAttr = MethodAttributes.RTSpecialName | MethodAttributes.HideBySig | MethodAttributes.Public;
ConstructorBuilder ctor = del.DefineConstructor (ctorAttr, CallingConventions.Standard, new Type[] { typeof(object), typeof(System.IntPtr) });
ctor.SetImplementationFlags (MethodImplAttributes.Runtime | MethodImplAttributes.Managed);
Type [] parameterTypes = signature.ParameterTypes.ToArray ();
MethodAttributes methodAttr = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.NewSlot | MethodAttributes.Virtual;
MethodBuilder invokeMethod = del.DefineMethod ("Invoke", methodAttr, signature.ReturnType, parameterTypes);
invokeMethod.SetImplementationFlags (MethodImplAttributes.Runtime | MethodImplAttributes.Managed);
return del.CreateType ();
}
public static Type GetDelegateType (BasicSignature signature)
{
Type delegateType;
if (type_cache == null)
type_cache = new Dictionary<BasicSignature, Type> ();
if (!type_cache.TryGetValue (signature, out delegateType)) {
delegateType = CreateDelegateType (signature);
type_cache.Add (signature, delegateType);
}
return delegateType;
}
